class Array

%w( a b c ).to(-10) # => []
%w( a b c d ).to(-2) # => ["a", "b", "c"]
%w().to(0) # => []
%w( a b c d ).to(10) # => ["a", "b", "c", "d"]
%w( a b c d ).to(2) # => ["a", "b", "c"]
%w( a b c d ).to(0) # => ["a"]

Returns the beginning of the array up to +position+.

def to(position)
  if position >= 0
    take position + 1
  else
    self[0..position]
  end
end